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Ingrà C, Del Frari G, Favole M, Tumminelli E, Rossi D, Collina S, Prati M, Ferreira RB, Ferrandino A. Effects of Growing Areas, Pruning Wound Protection Products, and Phenological Stage on the Stilbene Composition of Grapevine ( Vitis vinifera L.) Canes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:11465-11479. [PMID: 38739781 DOI: 10.1021/acs.jafc.4c00583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Applying plant protection products (PPP) on grapevine pruning wounds is a viticultural practice used to mitigate the spread of grapevine tuck disease, which is posing serious economic losses in the vine-wine industry. However, the impact of PPP on woody tissues remains unclear. Our study, conducted in two European vineyards, investigated the effects of Cuprocol, Tessior, Esquive, and Bentogran on stilbenes, in canes of Cabernet sauvignon and Syrah, at three phenological stages. Main stilbenes, quantified by HPLC-UV-DAD (1260 Agilent Infinity System) and identified by HPLC-ESI/MS (Thermo Scientific LCQ FLEET system), included E-resveratrol, E-ε-viniferin, E-piceatannol, and E-polydatin. Canes exhibited varying proportions of individual stilbenes, reflecting differences based on climatic conditions and phenological phases, rather than on the application of specific PPP. Vines grown in cool-climate conditions exhibited higher levels of E-resveratrol, whereas vines from the Mediterranean climate area exhibited higher levels of E-ε-viniferin. We also observed divergences in the accumulation trend of wood stilbenes throughout the season in canes collected in the two different growing areas.
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Affiliation(s)
- Chiara Ingrà
- DISAFA-Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, Largo Braccini 2, 10095 Torino, Grugliasco, Italy
| | - Giovanni Del Frari
- LEAF-Linking Landscape, Environment, Agriculture and Food-Research Center, Associated Laboratory TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - Miriam Favole
- DISAFA-Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, Largo Braccini 2, 10095 Torino, Grugliasco, Italy
| | - Elisabetta Tumminelli
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Daniela Rossi
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Simona Collina
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Marco Prati
- DISAFA-Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, Largo Braccini 2, 10095 Torino, Grugliasco, Italy
| | - Ricardo Boavida Ferreira
- LEAF-Linking Landscape, Environment, Agriculture and Food-Research Center, Associated Laboratory TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - Alessandra Ferrandino
- DISAFA-Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, Largo Braccini 2, 10095 Torino, Grugliasco, Italy
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2
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Monasterio A, Núñez E, Brossard N, Vega R, Osorio FA. Mechanical and Surface Properties of Edible Coatings Elaborated with Nanoliposomes Encapsulating Grape Seed Tannins and Polysaccharides. Polymers (Basel) 2023; 15:3774. [PMID: 37765628 PMCID: PMC10538182 DOI: 10.3390/polym15183774] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/01/2023] [Accepted: 09/02/2023] [Indexed: 09/29/2023] Open
Abstract
Edible composite coatings (ECC) formulated from biopolymers that incorporate antioxidant molecules represent an innovative alternative to improve food texture and provide health benefits. Tannins have aroused great interest due to their ability to stabilize suspensions and counteract the effects of free radicals. The mechanical and surface properties are crucial to establishing its quality and applicability. In this study, the objective was to analyze the mechanical and surface properties of ECC made with nanoliposomes that encapsulate grape seed tannins (TLS) and polysaccharides such as hydroxypropylmethylcellulose (HPMC) and kappa carrageenan (KCG) for their future direct application in foods susceptible to oxidation. The inclusion of HPMC or KCG affected the density, showing values in the range of 1010 to 1050 [kg/m3], evidencing significant changes (p < 0.05) in the surface tension in the TLS/FS-HPMC and TLS/FS mixtures. KCG and in the dispersion coefficients, with values in the range of -2.9 to -17.6 [mN/m] in HPS (S1) and -17.6 to -40.9 [mN/m] in PDMS (S2). The TLS/FS-HPMC coating showed higher stiffness and elastic recovery capacity than the TLS/FS-KCG coating, suggesting that the presence of TLS influenced the stiffness of the polymer. HPMC is recommended as a suitable polymer for coating solids, while KCG is more appropriate for suspensions. These findings provide valuable information for directly applying these ECC compounds to food products, potentially offering better preservation and health benefits.
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Affiliation(s)
- Angela Monasterio
- Department of Food Science and Technology, Technological Faculty, University of Santiago—Chile, USACH. Av. El Belloto 3735, Estación Central, Santiago 9170022, Chile;
| | - Emerson Núñez
- Department of Fruit Production and Enology, School of Agricultural and Forest Science, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile; (E.N.); (N.B.)
| | - Natalia Brossard
- Department of Fruit Production and Enology, School of Agricultural and Forest Science, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile; (E.N.); (N.B.)
| | - Ricardo Vega
- Department of Chemical Engineering, Engineering Faculty, University of Santiago—Chile, USACH. Av. L.B. O’Higgins 3363, Estación Central, Santiago 9170022, Chile;
| | - Fernando A. Osorio
- Department of Food Science and Technology, Technological Faculty, University of Santiago—Chile, USACH. Av. El Belloto 3735, Estación Central, Santiago 9170022, Chile;
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Rizwan A, Ijaz MU, Hamza A, Anwar H. Attenuative effect of astilbin on polystyrene microplastics induced testicular damage: Biochemical, spermatological and histopathological-based evidences. Toxicol Appl Pharmacol 2023; 471:116559. [PMID: 37217007 DOI: 10.1016/j.taap.2023.116559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 05/12/2023] [Accepted: 05/18/2023] [Indexed: 05/24/2023]
Abstract
Polystyrene microplastics (PS-MPs) are the potential environmental pollutants that possess the ability to induce testicular damage. Astilbin (ASB) is a dihydroflavonol, abundantly reported in multiple plants that has various pharmacological properties. This research elucidated the mitigative potential of ASB against PS-MPs-instigated testicular toxicity. 48 adult male rats (200 ± 10 g) were distributed into 4 groups (n = 12): control, PS-MPs received (0.01 mg/kg), PS-MPs + ASB received (0.01 mg/kg + 20 mg/kg) and ASB supplemented group (20 mg/kg). After 56th day of the trial, animals were sacrificed and testes were harvested for the estimation of biochemical, hormonal, spermatogenic, steroidogenic, apoptotic and histological profiles. PS-MPs intoxication significantly (P < 0.05) lowered glutathione peroxidase (GPx), superoxide dismutase (SOD), glutathione reductase (GSR) as well as catalase (CAT) activities, whereas elevated MDA as well as ROS levels. Besides, the levels of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), nuclear factor kappa-B (NF-κB) along with cyclooxygenase-2 (COX-2) activity were raised. PS-MPs treatment reduced luteinizing hormone (LH), plasma testosterone and follicle-stimulating hormone (FSH) level besides decreased epididymal sperm number, viability, motility as well as the count of HOS coil-tailed spermatozoa and increased sperm morphological irregularities. PS-MPs exposure lowered steroidogenic enzymes (17β-HSD, 3β-HSD and StAR protein along with Bcl-2 expression, besides increasing Caspase-3 and Bax expressions and histopathological alterations in testicular tissues. However, ASB treatment significantly reversed PS-MPs mediated damage. In conclusion, ASB administration is protective against PS-MPs-instigated testicular damage owing to its anti-inflammatory, anti-apoptotic, antioxidant and androgenic nature.
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Affiliation(s)
- Arooj Rizwan
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Umar Ijaz
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan.
| | - Ali Hamza
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan
| | - Haseeb Anwar
- Department of Physiology, Government College University, Faisalabad, Pakistan
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Afraz MT, Xu X, Adil M, Manzoor MF, Zeng XA, Han Z, Aadil RM. Subcritical and Supercritical Fluids to Valorize Industrial Fruit and Vegetable Waste. Foods 2023; 12:2417. [PMID: 37372628 DOI: 10.3390/foods12122417] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/14/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
The valorization of industrial fruit and vegetable waste has gained significant attention due to the environmental concerns and economic opportunities associated with its effective utilization. This review article comprehensively discusses the application of subcritical and supercritical fluid technologies in the valorization process, highlighting the potential benefits of these advanced extraction techniques for the recovery of bioactive compounds and unconventional oils from waste materials. Novel pressurized fluid extraction techniques offer significant advantages over conventional methods, enabling effective and sustainable processes that contribute to greener production in the global manufacturing sector. Recovered bio-extract compounds can be used to uplift the nutritional profile of other food products and determine their application in the food, pharmaceutical, and nutraceutical industries. Valorization processes also play an important role in coping with the increasing demand for bioactive compounds and natural substitutes. Moreover, the integration of spent material in biorefinery and biorefining processes is also explored in terms of energy generation, such as biofuels or electricity, thus showcasing the potential for a circular economy approach in the management of waste streams. An economic evaluation is presented, detailing the cost analysis and potential barriers in the implementation of these valorization strategies. The article emphasizes the importance of fostering collaboration between academia, industry, and policymakers to enable the widespread adoption of these promising technologies. This, in turn, will contribute to a more sustainable and circular economy, maximizing the potential of fruit and vegetable waste as a source of valuable products.
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Affiliation(s)
- Muhammad Talha Afraz
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Yangjiang Research Institute, South China University of Technology, Yangjiang 529500, China
| | - Xindong Xu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Yangjiang Research Institute, South China University of Technology, Yangjiang 529500, China
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
| | - Muhammad Adil
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Muhammad Faisal Manzoor
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
- School of Food Science and Engineering, Foshan University, Foshan 528225, China
| | - Xin-An Zeng
- Yangjiang Research Institute, South China University of Technology, Yangjiang 529500, China
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
| | - Zhong Han
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
- Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou 510641, China
| | - Rana Muhammad Aadil
- National Institute of Food Science and Technology, University of Agriculture, Faisalabad 38000, Pakistan
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Sommer S, Salie M, Garcia E, Reyes A, Ebersole SC, Naegele RP, Van Zyl S. A New Method for Fractionation and Characterization of Polyphenols and Tannins from Grapevine Leaf Tissue. PLANTS (BASEL, SWITZERLAND) 2023; 12:1706. [PMID: 37111929 PMCID: PMC10144354 DOI: 10.3390/plants12081706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 04/19/2023] [Indexed: 06/19/2023]
Abstract
Plants accumulate different types of phenolic material in their tissue as a response to biotic as well as abiotic stress. Monomeric polyphenols and smaller oligomers can serve as protection against ultraviolet radiation or prevent oxidative tissue damage, while larger molecules such as tannins can be the plant's reaction to an infection or physical damage. Therefore, characterization, profiling, and quantification of diverse phenolics can provide valuable information about the plant and the stress status at any given time. A method was developed that allows the extraction of polyphenols and tannins from leaf tissue, followed by fractionation and quantification. Extraction was performed with liquid nitrogen and 30% acetate-buffered ethanol. The method was tested with four cultivars under varying extraction conditions (solvent strength and temperature) and showed great improvements of the chromatography that would otherwise be impacted by tannins. The separation of tannins from smaller polyphenols was achieved by bovine serum albumin precipitation and resuspension in a urea-triethanolamine buffer. Tannins were reacted with ferric chloride and analyzed spectrophotometrically. Monomeric non-protein-precipitable polyphenols were then analyzed via HPLC-DAD from the supernatant of the precipitation sample. This way, a more complete spectrum of compounds can be analyzed from the same plant tissue extract. With the fractionation suggested here, hydroxycinnamic acids and flavan-3-ols can be separated and quantified with good accuracy and precision. Possible applications include the assessment of plant stress and response monitoring using the total concentrations of polyphenols and tannins, as well as the ratios between those compound classes.
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Affiliation(s)
- Stephan Sommer
- Grape and Wine Institute, University of Missouri, 223 Eckles Hall, Columbia, MO 65211, USA
| | - Marnelle Salie
- Viticulture and Enology Research Center, California State University, 2360 E. Barstow Ave, Fresno, CA 93740, USA
| | - Esteban Garcia
- Viticulture and Enology Research Center, California State University, 2360 E. Barstow Ave, Fresno, CA 93740, USA
| | - Anthony Reyes
- Viticulture and Enology Research Center, California State University, 2360 E. Barstow Ave, Fresno, CA 93740, USA
| | - Steven C. Ebersole
- Viticulture and Enology Research Center, California State University, 2360 E. Barstow Ave, Fresno, CA 93740, USA
| | - Rachel P. Naegele
- Sugarbeet and Bean Research Unit (SBRU), USDA ARS, 1066 Bogue St. #384, East Lansing, MI 48824, USA
| | - Sonet Van Zyl
- Viticulture and Enology Research Center, California State University, 2360 E. Barstow Ave, Fresno, CA 93740, USA
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Toyama Y, Fujita Y, Toshima S, Hirano T, Yamasaki M, Kunitake H. Comparison of Proanthocyanidin Content in Rabbiteye Blueberry ( Vaccinium virgatum Aiton) Leaves and the Promotion of Apoptosis against HL-60 Promyelocytic Leukemia Cells Using 'Kunisato 35 Gou' Leaf Extract. PLANTS (BASEL, SWITZERLAND) 2023; 12:948. [PMID: 36840296 PMCID: PMC9962561 DOI: 10.3390/plants12040948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/15/2023] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
Polyphenol-rich rabbiteye blueberry (Vaccinium virgatum Aiton) leaves have attracted attention as a food material. In this study, we compared the total polyphenols, total proanthocyanidin content, and antioxidant activity of the leaves of 18 blueberry varieties and investigated the seasonal variation in polyphenols. We also evaluated the anti-cancer cell proliferation properties of the rabbiteye blueberry leaf specific cultivar 'Kunisato 35 Gou'. Rabbiteye blueberry leaves had significantly higher total polyphenol and total proanthocyanidin values than northern highbush blueberry and southern highbush blueberry leaves. The antioxidant activity of blueberry leaves was highly positively correlated with both the total polyphenol and total proanthocyanidin content. Variations were observed in the total polyphenol and total proanthocyanidin content of rabbiteye blueberry leaves harvested at different points in the growing season; leaves collected in fall to winter contained more epicatechin in addition to proanthocyanidins. In the evaluation of anti-cancer cell proliferation properties against HL-60 promyelocytic leukemia cells, the September-harvested extracts of rabbiteye blueberry 'Kunisato 35 Gou' showed strong properties, and the use of an FITC Annexin V apoptosis detection kit with propidium iodide confirmed that this HL-60 cell death occurred via apoptosis. Limiting the harvest time would make rabbiteye blueberry leaves a more functional food ingredient.
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Affiliation(s)
- Yuki Toyama
- Graduate School of Agriculture, University of Miyazaki, 1-1 Gakuen-kibanadai nishi, Miyazaki 889-2192, Japan
| | - Yoko Fujita
- Michimoto Foods Products Co., Ltd., 1667 Kou Tano-cho, Miyazaki 889-1701, Japan
| | - Saki Toshima
- Interdisciplinary Graduate School of Agriculture and Engineering, University of Miyazaki, 1-1 Gakuenkibanadainishi, Miyazaki 889-2192, Japan
| | - Tomonari Hirano
- Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen-kibanadai nishi, Miyazaki 889-2192, Japan
| | - Masao Yamasaki
- Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen-kibanadai nishi, Miyazaki 889-2192, Japan
| | - Hisato Kunitake
- Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen-kibanadai nishi, Miyazaki 889-2192, Japan
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Han X, Sun J, Niu T, Mao B, Gao S, Zhao P, Sun L. Molecular Insight into the Binding of Astilbin with Human Serum Albumin and Its Effect on Antioxidant Characteristics of Astilbin. Molecules 2022; 27:molecules27144487. [PMID: 35889360 PMCID: PMC9321622 DOI: 10.3390/molecules27144487] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/03/2022] [Accepted: 07/08/2022] [Indexed: 11/25/2022] Open
Abstract
Astilbin is a dihydroflavonol glycoside identified in many natural plants and functional food with promising biological activities which is used as an antioxidant in the pharmaceutical and food fields. This work investigated the interaction between astilbin and human serum albumin (HSA) and their effects on the antioxidant activity of astilbin by multi-spectroscopic and molecular modeling studies. The experimental results show that astilbin quenches the fluorescence emission of HSA through a static quenching mechanism. Astilbin and HSA prefer to bind at the Site Ⅰ position, which is mainly maintained by electrostatic force, hydrophobic and hydrogen bonding interactions. Multi-spectroscopic and MD results indicate that the secondary structure of HSA could be changed because of the interaction of astilbin with HSA. DPPH radical scavenging assay shows that the presence of HSA reduces the antioxidant capacity of astilbin. The explication of astilbin–HSA binding mechanism will provide insights into clinical use and resource development of astilbin in food and pharmaceutical industries.
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Affiliation(s)
- Xiangyu Han
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; (X.H.); (J.S.); (T.N.); (B.M.)
| | - Jing Sun
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; (X.H.); (J.S.); (T.N.); (B.M.)
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Tianmei Niu
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; (X.H.); (J.S.); (T.N.); (B.M.)
| | - Beibei Mao
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; (X.H.); (J.S.); (T.N.); (B.M.)
| | - Shijie Gao
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan 250355, China;
| | - Pan Zhao
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; (X.H.); (J.S.); (T.N.); (B.M.)
- Correspondence: (P.Z.); (L.S.)
| | - Linlin Sun
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; (X.H.); (J.S.); (T.N.); (B.M.)
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan 250355, China;
- Correspondence: (P.Z.); (L.S.)
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Štambuk P, Šikuten I, Karoglan Kontić J, Maletić E, Preiner D, Tomaz I. Leaf Polyphenolic Profile as a Determinant of Croatian Native Grapevine Varieties' Susceptibility to Plasmopara viticola. FRONTIERS IN PLANT SCIENCE 2022; 13:836318. [PMID: 35360327 PMCID: PMC8963502 DOI: 10.3389/fpls.2022.836318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 02/08/2022] [Indexed: 06/14/2023]
Abstract
Since grapevine is highly susceptible to various pathogens, enormous amounts of pesticides are applied each season to achieve profitable production. One of the most destructive grapevine diseases is downy mildew, and their interaction has been in the spotlight for more than a decade. When it comes to a metabolome level, phenolic compounds are relevant to investigate due to their involvement in the plant immune system and known antifungal properties. Croatian grapevine germplasm is highly heterogeneous due to its long history of cultivation in diversified geographical regions. Since it has been found that native varieties react differently to the infection of Plasmopara viticola, the intention of this study is to define if the chemical background of the leaves, i.e., polyphenolic composition, is responsible for these dissimilarities. Therefore, the leaves of 17 genotypes, among which 14 were native and 3 were controls, were analyzed using high-performance liquid chromatography (HPLC) in four terms: before inoculation and 24, 48, and 96 h post inoculation (hpi). During this early phase, significant differences were found neither between the terms nor between the non-inoculated and inoculated samples, except for resveratrol-3-O-glucoside. By applying principal component analysis (PCA) using initial leaf polyphenolic composition, varieties of V. vinifera were clearly separated into three different groups corresponding to their International Organization of Vine and Wine (OIV) classes of susceptibility to P. viticola. Results obtained in this research suggest that the initial constitutive polyphenolic composition of the cultivar leaves has a crucial influence on their susceptibility to P. viticola, and this finding can be used to improve the success of grapevine breeding programs toward downy mildew resistance.
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Affiliation(s)
- Petra Štambuk
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Zagreb, Croatia
| | - Iva Šikuten
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Zagreb, Croatia
| | - Jasminka Karoglan Kontić
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Zagreb, Croatia
| | - Edi Maletić
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Zagreb, Croatia
| | - Darko Preiner
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Zagreb, Croatia
| | - Ivana Tomaz
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Zagreb, Croatia
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9
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Ripamonti M, Maron F, Cornara D, Marzachì C, Fereres A, Bosco D. Leafhopper feeding behaviour on three grapevine cultivars with different susceptibilities to Flavescence dorée. JOURNAL OF INSECT PHYSIOLOGY 2022; 137:104366. [PMID: 35122779 DOI: 10.1016/j.jinsphys.2022.104366] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 01/28/2022] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
Scaphoideus titanus (Ball) is a grapevine-feeder leafhopper, and the most important vector of Flavescence dorée of grapevine (FD), a disease associated with phytoplasmas belonging to ribosomal subgroups 16Sr-V-C and -D. FD is a major constraint to viticulture in several European countries and, so far, its control has relied on roguing of infected plants and insecticide applications against the vector. Detailed knowledge on different levels of the multifaceted phytoplasma-plant-vector relationship is required to envisage and explore more sustainable ways to control the disease spread. In the present work, S. titanus feeding behaviour was described on three grapevine cultivars: Barbera (susceptible to FD), Brachetto, and Moscato (tolerant to FD) using the Electrical Penetration Graph (EPG) technique. Interestingly, no differences were highlighted in the non-phloem feeding phases, thus suggesting that the tested cultivars have no major differences in the biochemical composition or structure of the leaf cuticle, epidermis or mesophyll, that can affect the first feeding activities. On the contrary, the results showed significant differences in leafhopper feeding behaviour in terms of the duration of the phloem feeding phase, longer on Barbera and shorter on Brachetto and Moscato, and of the frequency of interruption-salivation events inside the phloem, higher on Brachetto and Moscato. These findings indicate a possible preference for the Barbera cultivar, a better host for the leafhopper. Scaphoideus titanus feeding behaviour on Barbera correlates with an enhanced FDp transmission efficiency, thus explaining, at least in part, the higher susceptibility of this cultivar to FD. The mechanisms for the possible non-preference for Brachetto and Moscato are discussed, and an antixenosis is hypothesized. We propose that breeding for resistance against FD should take into account both plant traits associated with the response to the phytoplasmas and to the vector.
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Affiliation(s)
- Matteo Ripamonti
- Department of Agriculture, Forest and Food Sciences (DiSAFA), University of Turin, Grugliasco, TO, Italy; Institute for Sustainable Plant Protection - National Research Council of Italy, IPSP-CNR, Torino, Italy
| | - Federico Maron
- Department of Agriculture, Forest and Food Sciences (DiSAFA), University of Turin, Grugliasco, TO, Italy
| | - Daniele Cornara
- Instituto de Ciencias Agrarias, Consejo Superior de Investigaciones Cientificas, ICA-CSIC, Madrid, Spain
| | - Cristina Marzachì
- Institute for Sustainable Plant Protection - National Research Council of Italy, IPSP-CNR, Torino, Italy
| | - Alberto Fereres
- Instituto de Ciencias Agrarias, Consejo Superior de Investigaciones Cientificas, ICA-CSIC, Madrid, Spain
| | - Domenico Bosco
- Department of Agriculture, Forest and Food Sciences (DiSAFA), University of Turin, Grugliasco, TO, Italy.
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10
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Khan Y, Mulk Khan S, ul Haq I, Farzana F, Abdullah A, Mehmood Abbasi A, Alamri S, Hashem M, Sakhi S, Asif M, Shah H. Antioxidant potential in the leaves of grape varieties (Vitis vinifera L.) grown in different soil compositions. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Negro C, Aprile A, Luvisi A, De Bellis L, Miceli A. Antioxidant Activity and Polyphenols Characterization of Four Monovarietal Grape Pomaces from Salento (Apulia, Italy). Antioxidants (Basel) 2021; 10:1406. [PMID: 34573038 PMCID: PMC8465212 DOI: 10.3390/antiox10091406] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/24/2021] [Accepted: 08/26/2021] [Indexed: 11/24/2022] Open
Abstract
The wine industry annually produces millions of tons of by-products rich in polyphenolic compounds that can be reused as secondary raw material in the food, cosmetic and pharmaceutical industries. The purpose of this work was to describe the presence of nutraceutical compounds and to evaluate the antioxidant activity of pomaces from three Apulian (South Italy, Italy) grape varieties (Negroamaro, Malvasia di Lecce and Primitivo) and to compare them with one of the most cultivated wines in Europe (Cabernet Sauvignon). The main classes of polyphenolic substances were characterized via high performance liquid chromatography/diode array detector/mass spectrometer time of flight (HPLC/DAD/TOF) and the antioxidant activity was evaluated with three different methods. The four investigated grape marcs have shown different polyphenols and antioxidant activities. Primitivo marc showed the higher antioxidant activity due to the excellent level of polyphenols, followed by the Negroamaro cultivar. In addition, marcs from traditional Apulian vines showed higher antioxidant activities than Cabernet Sauvignon because of an elevated level of active polyphenolic substances such as catechin, epicatechin, quercetin and its derivatives.
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Affiliation(s)
- Carmine Negro
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), Salento University, 73100 Lecce, Italy; (A.A.); (A.L.); (L.D.B.); (A.M.)
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Duangjan C, Rangsinth P, Zhang S, Gu X, Wink M, Tencomnao T. Vitis Vinifera Leaf Extract Protects Against Glutamate-Induced Oxidative Toxicity in HT22 Hippocampal Neuronal Cells and Increases Stress Resistance Properties in Caenorhabditis Elegans. Front Nutr 2021; 8:634100. [PMID: 34179052 PMCID: PMC8225951 DOI: 10.3389/fnut.2021.634100] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 04/27/2021] [Indexed: 12/21/2022] Open
Abstract
Vitis vinifea has been used for traditional medicines, food, beverages, and dietary antioxidant supplements. The chemical compositions and biological activities of the fruits and seeds have been extensively investigated. However, the biological effects of the leaves are limited, and its anti-neurodegeneration or antiaging activities are little known. The current work aims to study the beneficial effects of V. vinifera leaf extract on neuroprotective effects in HT22 cells, antiaging, and oxidative stress resistance properties in the Caenorhabditis elegans model. The ethanol extract was characterized by phytochemical composition using gas/liquid chromatography–mass spectrometry and reversed-phase high-performance liquid chromatography. The beneficial effects of V. vinifera ethanol (VVE) extract on antioxidant properties, neuroprotective effects, and the underlying mechanisms were studied by in vitro and in vivo studies. In HT22 cells, we found that VVE has a protective effect against glutamate-mediated oxidative stress-induced cell death. The gene expression of cellular antioxidant enzymes such as CAT, SODs, GSTs, and GPx was upregulated by VVE treatment. Moreover, VVE was also shown to alleviate oxidative stress and attenuate reactive oxygen species accumulation in C. elegans. We demonstrated that VVE could upregulate the expression of stress-response genes gst-4 and sod-3 and downregulate the expression of hsp-16.2. Our results suggest that the oxidative stress resistance properties of VVE are possibly involved in DAF-16/FoxO transcription factors. VVE reduced age-related markers (lipofuscin) while did not extend the life span of C. elegans under normal conditions. This study reports the neuroprotective effect and antioxidant activity of V. vinifera leaf extract and suggests its potential as a dietary or alternative supplement to defend against oxidative stress and age-related diseases.
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Affiliation(s)
- Chatrawee Duangjan
- Graduate Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand.,Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand.,Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, United States
| | - Panthakarn Rangsinth
- Graduate Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand.,Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Shaoxiong Zhang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China.,Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Heidelberg, Germany
| | - Xiaojie Gu
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Heidelberg, Germany.,Department of Biotechnology, School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian, China
| | - Michael Wink
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Heidelberg, Germany
| | - Tewin Tencomnao
- Graduate Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand.,Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand.,Natural Products for Neuroprotection and Anti-Ageing Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
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Lossi L, Merighi A, Novello V, Ferrandino A. Protective Effects of Some Grapevine Polyphenols against Naturally Occurring Neuronal Death. Molecules 2020; 25:E2925. [PMID: 32630488 PMCID: PMC7356852 DOI: 10.3390/molecules25122925] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 06/12/2020] [Accepted: 06/22/2020] [Indexed: 12/15/2022] Open
Abstract
The interest in the biological properties of grapevine polyphenols (PPs) in neuroprotection is continuously growing in the hope of finding translational applications. However, there are several concerns about the specificity of action of these molecules that appear to act non-specifically on the permeability of cellular membranes. Naturally occurring neuronal death (NOND) during cerebellar maturation is a well characterized postnatal event that is very useful to investigate the death and rescue of neurons. We here aimed to establish a baseline comparative study of the potential to counteract NOND of certain grapevine PPs of interest for the oenology. To do so, we tested ex vivo the neuroprotective activity of peonidin- and malvidin-3-O-glucosides, resveratrol, polydatin, quercetin-3-O-glucoside, (+)-taxifolin, and (+)-catechin. The addition of these molecules (50 μM) to organotypic cultures of mouse cerebellum explanted at postnatal day 7, when NOND reaches a physiological peak, resulted in statistically significant (two-tailed Mann-Whitney test-p < 0.001) reductions of the density of dead cells (propidium iodide+ cells/mm2) except for malvidin-3-O-glucoside. The stilbenes were less effective in reducing cell death (to 51-60%) in comparison to flavanols, (+)-taxifolin and quercetin 3-O-glucoside (to 69-72%). Thus, molecules with a -OH group in ortho position (taxifolin, quercetin 3-O-glucoside, (+)-catechin, and peonidin 3-O-glucoside) have a higher capability to limit death of cerebellar neurons. As NOND is apoptotic, we speculate that PPs act by inhibiting executioner caspase 3.
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Affiliation(s)
- Laura Lossi
- Department of Veterinary Sciences (DSV), University of Turin, 10095 Grugliasco (TO), Italy
| | - Adalberto Merighi
- Department of Veterinary Sciences (DSV), University of Turin, 10095 Grugliasco (TO), Italy
| | - Vittorino Novello
- Department of Agricultural, Forestry and Food Sciences (DISAFA), University of Turin, 10095 Grugliasco (TO), Italy
| | - Alessandra Ferrandino
- Department of Agricultural, Forestry and Food Sciences (DISAFA), University of Turin, 10095 Grugliasco (TO), Italy
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Sharma A, Gupta S, Chauhan S, Nair A, Sharma P. ASTILBIN: A PROMISING UNEXPLORED COMPOUND WITH MULTIDIMENSIONAL MEDICINAL AND HEALTH BENEFITS. Pharmacol Res 2020; 158:104894. [PMID: 32407960 DOI: 10.1016/j.phrs.2020.104894] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 05/04/2020] [Accepted: 05/04/2020] [Indexed: 12/21/2022]
Abstract
BACKGROUND Many flavonoids have various beneficial actions like anti-inflammatory, anti-carcinogenic properties and many other clinical conditions. Astilbin is one such flavanoid compound having many physiological as well as pharmacological actions. PURPOSE To summarize the important findings from the research conducted using astilbin having significance to its physiological and pharmacological activities as well as the patents filed using astilbin. STUDY DESIGN Systematic review and compilation of the collected literature. METHOD An extensive investigation of literature was done using several worldwide electronic scientific databases like PUBMED, SCOPUS, Science Direct and Google Scholar etc. All the article available in the English language that used our compound of interest i.e. astilbin, on the basis of inclusion criteria decided were retrieved from these databases, thoroughly reviewed and were summarized. RESULT It has been established that astilbin can play a vital in the management of diseases associated with immune system. It also possesses antibacterial, anti-oxidative and hepatoprotective activity. CONCLUSION These researches provide evidence that astilbin possesses great potential and thus can be utilized in the management of various disorders, thus establishing itself as a potential candidate for novel drug development. Also, there is still room for research on astilbin like it can be evaluated for anticancer potential, protective effect in various diabetic complications and many more. Overall observations from data suggested that astilbin is a promising compound and proved its efficacy in every preclinical study which is conducted till date. Some of the pharmacological activity is still unexplored. After successful preclinical trials, astilbin can go for further clinical trials.
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Affiliation(s)
- Abhishek Sharma
- Department of Pharmacology, M. M. College of Pharmacy, M. M. (Deemeed to be University), Mullana, (Ambala), Haryana, India
| | - Sumeet Gupta
- Department of Pharmacology, M. M. College of Pharmacy, M. M. (Deemeed to be University), Mullana, (Ambala), Haryana, India.
| | - Samrat Chauhan
- Department of Pharmacology, M. M. College of Pharmacy, M. M. (Deemeed to be University), Mullana, (Ambala), Haryana, India
| | - Anroop Nair
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Prerna Sharma
- Department of Pharmacognosy, M M School of Pharmacy, M M University, Sadupur, Ambala, Haryana, India
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Aresta A, Cotugno P, De Vietro N, Massari F, Zambonin C. Determination of Polyphenols and Vitamins in Wine-Making by-Products by Supercritical Fluid Extraction (SFE). ANAL LETT 2020. [DOI: 10.1080/00032719.2020.1749846] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | - Pietro Cotugno
- Department of Biology, University “Aldo Moro”, Bari, Italy
| | | | | | - Carlo Zambonin
- Department of Chemistry, University “Aldo Moro”, Bari, Italy
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Negro C, Sabella E, Nicolì F, Pierro R, Materazzi A, Panattoni A, Aprile A, Nutricati E, Vergine M, Miceli A, De Bellis L, Luvisi A. Biochemical Changes in Leaves of Vitis vinifera cv. Sangiovese Infected by Bois Noir Phytoplasma. Pathogens 2020; 9:E269. [PMID: 32272699 PMCID: PMC7238227 DOI: 10.3390/pathogens9040269] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 02/19/2020] [Accepted: 04/03/2020] [Indexed: 11/17/2022] Open
Abstract
Bois noir is a disease associated with the presence of phytoplasma 'Candidatus Phytoplasma solani' belonging to the Stolbur group (subgroup 16SrXII-A), which has a heavy economic impact on grapevines. This study focused on the changes induced by phytoplasma in terms of the profile and amount of secondary metabolites synthesized in the phenylpropanoid pathway in leaves of Vitis vinifera L. red-berried cultivar Sangiovese. Metabolic alterations were assessed according to the disease progression through measurements of soluble sugars, chlorophyll, and phenolic compounds produced by plant hosts, in response to disease on symptomatic and asymptomatic Bois noir-positive plants. Significant differences were revealed in the amount of soluble sugars, chlorophyll, and accumulation/reduction of some compounds synthesized in the phenylpropanoid pathway of Bois noir-positive and negative grapevine leaves. Our results showed a marked increase in phenolic and flavonoid production and a parallel decrease in lignin content in Bois noir-positive compared to negative leaves. Interestingly, some parameters (chlorophyll a, soluble sugars, total phenolic or flavonoids content, proanthocyanidins, quercetin) differed between Bois noir-positive and negative leaves regardless of symptoms, indicating measurable biochemical changes in asymptomatic leaves. Our grapevine cultivar Sangiovese results highlighted an extensive modulation of the phenylpropanoid biosynthetic pathway as a defense mechanism activated by the host plant in response to Bois noir disease.
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Affiliation(s)
- Carmine Negro
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy; (C.N.); (E.S.); (A.A.); (E.N.); (M.V.); (A.M.); (L.D.B.); (A.L.)
| | - Erika Sabella
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy; (C.N.); (E.S.); (A.A.); (E.N.); (M.V.); (A.M.); (L.D.B.); (A.L.)
| | - Francesca Nicolì
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy; (C.N.); (E.S.); (A.A.); (E.N.); (M.V.); (A.M.); (L.D.B.); (A.L.)
| | - Roberto Pierro
- Department of Agriculture, Food and Environment (DAFE), University of Pisa, 56100 Pisa, Italy; (R.P.); (A.M.); (A.P.)
| | - Alberto Materazzi
- Department of Agriculture, Food and Environment (DAFE), University of Pisa, 56100 Pisa, Italy; (R.P.); (A.M.); (A.P.)
| | - Alessandra Panattoni
- Department of Agriculture, Food and Environment (DAFE), University of Pisa, 56100 Pisa, Italy; (R.P.); (A.M.); (A.P.)
| | - Alessio Aprile
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy; (C.N.); (E.S.); (A.A.); (E.N.); (M.V.); (A.M.); (L.D.B.); (A.L.)
| | - Eliana Nutricati
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy; (C.N.); (E.S.); (A.A.); (E.N.); (M.V.); (A.M.); (L.D.B.); (A.L.)
| | - Marzia Vergine
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy; (C.N.); (E.S.); (A.A.); (E.N.); (M.V.); (A.M.); (L.D.B.); (A.L.)
| | - Antonio Miceli
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy; (C.N.); (E.S.); (A.A.); (E.N.); (M.V.); (A.M.); (L.D.B.); (A.L.)
| | - Luigi De Bellis
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy; (C.N.); (E.S.); (A.A.); (E.N.); (M.V.); (A.M.); (L.D.B.); (A.L.)
| | - Andrea Luvisi
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy; (C.N.); (E.S.); (A.A.); (E.N.); (M.V.); (A.M.); (L.D.B.); (A.L.)
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Vallejos S, Moreno D, Ibeas S, Muñoz A, García FC, García JM. Polymeric chemosensor for the colorimetric determination of the total polyphenol index (TPI) in wines. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.06.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Analysis of Flavonoid Metabolites in Citrus Peels ( Citrus reticulata "Dahongpao") Using UPLC-ESI-MS/MS. Molecules 2019; 24:molecules24152680. [PMID: 31344795 PMCID: PMC6696472 DOI: 10.3390/molecules24152680] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/14/2019] [Accepted: 07/22/2019] [Indexed: 12/13/2022] Open
Abstract
Flavonoids are a kind of essential substance for the human body because of their antioxidant properties and extremely high medicinal value. Citrus reticulata “Dahongpao” (DHP) is a special citrus variety that is rich in flavonoids, however little is known about its systematic flavonoids profile. In the present study, the presence of flavonoids in five important citrus varieties, including DHP, Citrus grandis Tomentosa (HZY), Citrus ichangensis Swingle (YCC), Citrus sinensis (L.) Osbeck (TC), and Citrus reticulata ‘Buzhihuo’ (BZH), was determined using a UPLC-ESI-MS/MS-based, widely targeted metabolome. Results showed that a total of 254 flavonoid metabolites (including 147 flavone, 39 flavonol, 21 flavanone, 24 anthocyanins, 8 isoflavone, and 15 polyphenol) were identified. The total flavonoid content of peels from DHP was the highest. DHP could be clearly separated from other samples through clustering analysis and principal component analysis (PCA). Further, 169 different flavonoid metabolites were observed between DHP peels and the other four citrus peels, and 26 down-regulated differential metabolites displayed important biological activities in DHP. At the same time, a unique flavonoid component, tricin 4′-O-syringyl alcohol, was only found in DHP, which could be used as a marker to distinguish between other varieties. This work might facilitate a better understanding of flavonoid metabolites between DHP peels and the other four citrus peels and provide a reference for its sufficient utilization in the future.
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